That still doesn't help me understand why you would clone the entire repo just to install the docker image. You create the compose file (and the variables file if that's how you roll) and docker handles the rest. For someone who is already admitting their unfamiliarity with things, the whole idea of getting comfortable with git just seems unnecessary and unhelpful in this context.

It's fine, you don't need to reply again. Just different outlooks, I guess.